Black Berkey filter pore size

Berkey Filter Pore Size

Though the Black Berkey filter element is a proprietary formulation, I have discovered some informational clues that hint at their probable pore size.

reasons why AA batteries corrode and leak

Why Do Batteries Corrode And Leak

The White Fluff of Battery Corrosion. What is that stuff?! Here’s why they leak and how-to fix it. And batteries that won’t corrode!